• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F04B - Positive-displacement machines for liquidspumps
• F04B 9/113 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor

Patent holdings for IPC class F04B 9/113

Total number of patents in this class: 93

10-year publication summary

Principal owners for this class